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Innervation of Lower Limb (Muscle Innervation (Ankle (Eversion (L5, S1),…
Innervation of Lower Limb
Muscle Innervation
Knee
Flexion
L5, S1
Extension
L3, L4
Ankle
Eversion
L5, S1
Inversion
L4, L5
Plantarflexion
S1, S2
Extension (toes)
L5, S1
Dorsiflexion
L4, L5
Flexion (toes)
S2, S3
Hip
Abduction
L5, S1
Adduction
L2, L3, L4
Extension
L4, L5
Internal Rotation
L4, L5
Flexion
L2, L3
External Rotation
L5, S1
Cutaneous Innervation (Dermatomes)
Anterior
Medial leg
L4
Lateral leg, Medial side of foot - 1st-3rd phalanges
L5
2nd 1/2 of thigh & knee
L3
1st 1/2 of thigh
L2
Lateral foot - 4th & 5th phalanges
S1
Inguinal area
L1
Groin
S2, S3, S4
Posterior
Circle around gluteal cleft
S4
More inner circle around gluteal cleft
S5
Gluteus region
S3
Posterior thigh to lateral leg
S2
Lateral hip (iliac crest)
L2
Medial leg
L4
Bottom of foot to 4th & 5th phalanges
S1
Lateral leg
L5